﻿// Jinx AJAX Framework
// Copyright (C) 2008 Blake Hegerle
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

using System.Linq;
using Jinx.Naming;
using Jinx.Naming.Paths;

namespace Jinx.Bindings.Observation
{
    internal abstract class ObserverNode
    {
        private readonly BindingContext bindingContext;
        private readonly Path path;
        private readonly PathResolver resolver;

        internal ObserverNode(Path Path, BindingContext BindingContext)
        {
            path = Path;
            bindingContext = BindingContext;

            resolver = new PathResolver(BindingContext.NamingContext);
        }

        internal IPathNode PathNode
        {
            get { return Path.Last(); }
        }

        protected Path Path
        {
            get { return path; }
        }

        protected BindingContext BindingContext
        {
            get { return bindingContext; }
        }

        protected PathResolver Resolver
        {
            get { return resolver; }
        }

        internal abstract void Update();
        internal abstract void Invalidate();
    }
}